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    <div class="refentry" id="glCullFace">
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      <div class="refnamediv">
        <h2>Name</h2>
        <p>glCullFace — specify whether front- or back-facing polygons can be culled</p>
      </div>
      <div class="refsynopsisdiv">
        <h2>C Specification</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glCullFace</strong>(</code>
              </td>
              <td>GLenum <var class="pdparam">mode</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>mode</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies whether front- or back-facing polygons are candidates for culling.
                    Symbolic constants
                    <code class="constant">GL_FRONT</code>, <code class="constant">GL_BACK</code>, and <code class="constant">GL_FRONT_AND_BACK</code> are accepted.
                    The initial value is <code class="constant">GL_BACK</code>.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p>
            <code class="function">glCullFace</code> specifies whether front- or back-facing polygons are culled
            (as specified by <span class="emphasis"><em>mode</em></span>) when polygon culling is enabled. Polygon
            culling is initially disabled.
            To enable and disable polygon culling, call the
            <a class="citerefentry" href="glEnable.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnable</span></span></a> and <a class="citerefentry" href="glDisable.xhtml"><span class="citerefentry"><span class="refentrytitle">glDisable</span></span></a> commands
            with the argument <code class="constant">GL_CULL_FACE</code>.
        </p>
        <p>
            <a class="citerefentry" href="glFrontFace.xhtml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a> specifies which of the clockwise and counterclockwise polygons
            are front-facing and back-facing.
            See <a class="citerefentry" href="glFrontFace.xhtml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a>.
        </p>
      </div>
      <div class="refsect1" id="notes">
        <h2>Notes</h2>
        <p>
            If <em class="parameter"><code>mode</code></em> is <code class="constant">GL_FRONT_AND_BACK</code>, no polygons are drawn, but other
            primitives such as points and lines are drawn.
        </p>
      </div>
      <div class="refsect1" id="errors">
        <h2>Errors</h2>
        <p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>mode</code></em> is not an accepted value.
        </p>
      </div>
      <div class="refsect1" id="associatedgets">
        <h2>Associated Gets</h2>
        <p>
            <a class="citerefentry" href="glIsEnabled.xhtml"><span class="citerefentry"><span class="refentrytitle">glIsEnabled</span></span></a> with argument <code class="constant">GL_CULL_FACE</code>
        </p>
        <p>
            <a class="citerefentry" href="glGet.xhtml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_CULL_FACE_MODE</code>
        </p>
      </div>
      <div class="refsect1" id="versions">
        <h2>API Version Support</h2>
        <div class="informaltable">
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                <th style="text-align: left; border-right: 2px solid ; ">
                 
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; " colspan="2">
                <span class="bold"><strong>OpenGL ES API Version</strong></span>
            </th>
              </tr>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>Function Name</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>2.0</strong></span>
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.0</strong></span>
            </th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; ">glCullFace</td>
                <td style="text-align: center; border-right: 2px solid ; ">✔</td>
                <td style="text-align: center; ">✔</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p>
            <a class="citerefentry" href="glEnable.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnable</span></span></a>,
            <a class="citerefentry" href="glFrontFace.xhtml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a>
        </p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright <span class="trademark"/>© 1991-2006 Silicon Graphics, Inc.
            Copyright <span class="trademark"/>© 2010-2014 Khronos Group.
            This document is licensed under the SGI Free Software B License.
            For details, see
            <a class="link" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
        </p>
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